Sales Agreement Template Thailand (2026): Free Format + Legal Requirements

Someone wants to buy your pickup truck, your used production machine, or an entire pallet of stock at a discount. The deal takes five minutes to agree on and one week to go wrong: the buyer pays a deposit, then disappears; or the goods are delivered and payment "is coming next month"; or you sell a car and the buyer keeps driving it in your name while the traffic fines pile up on yours. A one-page sales and purchase agreement — a สัญญาซื้อขาย — prevents almost all of it, and most people skip writing one because they assume a receipt is enough.

This guide gives you the standard sections of a sales agreement that holds up in Thailand, explains the rules that actually matter (including how deposits work under Section 381 of the Civil and Commercial Code), and walks through the extra steps for selling a vehicle. If you want to move fast, generate the document from a draft with AiDocX's contract tools, fill in eight blanks, and have both parties sign electronically in minutes.

Is a Written Sale Contract Even Required in Thailand?

Technically, no. Under Section 453 of the Civil and Commercial Code (CCC), a sale exists the moment both parties agree that one will transfer property and the other will pay the price. Verbal sales of goods are perfectly legal, which is why millions of market transactions happen every day with nothing in writing.

But legality is not the same as proof. When a dispute reaches a Thai court or a police station, the questions become: What exactly was sold? For how much? Was a deposit paid, and on what terms? Who pays for transport? A written agreement signed by both parties answers all four before anyone's memory starts editing itself.

Some situations effectively require more than a handshake regardless:

• Land — ownership only transfers through registration at the Provincial Land Office; the sale agreement is the supporting document, not the transfer itself.
• Motor vehicles — ownership transfers through registration change at the Department of Land Transport (DLT), and the office expects supporting documents showing the transaction.
• Anything paid in installments — without written terms, "installment" is whatever either party says it was.
• High-value goods between businesses — invoices alone rarely capture condition, warranty, or delivery obligations clearly.

The Sections Every Thai Sales Agreement Should Have

A workable sales agreement fits on one to two pages. Here is what belongs in each section, and why it matters when something goes wrong.

1. Parties

Full legal names, ID card numbers (or company registration numbers), and addresses of buyer and seller. For companies, use the exact registered name and the authorized director's name. Nicknames like "Khun Somchai from the shop" identify nobody in court — the 13-digit ID number does.

2. Description of the Goods

Be unreasonably specific. "One motorcycle" describes ten thousand motorcycles. Write brand, model, year, color, engine/frame number, license plate (for vehicles), serial number (for equipment), quantity and unit price (for stock). Attach photos as an appendix if condition matters — scratches, mileage, hours used.

For vehicles specifically, include:

• Registration number and province
• Chassis and engine numbers
• Current mileage
• Whether any finance/lease is still outstanding on it

3. Price and Payment Terms

State the total price in numerals and words (in Thai practice this prevents tampering disputes), the currency, and the payment method. If payment is split — deposit plus balance — state both amounts and the exact due date for the balance, plus what happens if it passes.

4. Deposit (เงินมัดจำ)

Deposits are where most informal deals explode, so Thai law is unusually clear here. Under Section 381 CCC, if the buyer defaults, the seller may keep the deposit; if the seller defaults, the seller must return the deposit and pay an equal amount back to the buyer. That symmetry is built into the law — you don't need to write it, but restating it in the agreement makes sure both parties understood it before signing.

Two practical notes:

• Distinguish มัดจำ (deposit) from วางประกัน (down payment/earnest money) — the terms get used loosely in classified ads, but in a dispute the label in your written agreement is what counts.
• State explicitly whether the deposit is credited toward the final price. It usually is, but writing it removes the argument.

5. Delivery and Transfer of Risk

Who moves the goods, who pays transport, and — critically — when risk passes. If the truck is damaged in transit after payment but before handover, the agreement should say whose problem that is. One line: "Risk passes to the Buyer upon physical delivery on [date] at [location]."

6. Condition and Warranty

Selling used goods "as-is" (ตามสภาพ) is enforceable — but say so explicitly. Selling anything else means stating whatever warranty applies: period, what's covered, and whether remedy is repair, replacement, or refund. Silence here defaults to statutory warranty concepts under the CCC, which sellers usually find broader than they expected.

Also disclose known defects in writing. A seller who conceals a known defect can face claims even with an as-is clause.

7. Default and Termination

What happens if the buyer doesn't pay by the balance date, or the seller doesn't deliver. Standard Thai practice mirrors Section 381: defaulting buyer forfeits the deposit, defaulting seller returns double the deposit. You can also allow a cure period ("buyer has 7 days from written notice to complete payment before the deal terminates").

8. Signatures

Both parties sign (and ideally thumbprint, per common practice on important Thai documents) with the date. Two independent witnesses are not legally required for an ordinary sale but strengthen the document for high-value deals.

Copy-Ready Template Structure

Use this skeleton — fill every bracket, delete nothing:

SALE AND PURCHASE AGREEMENT / สัญญาซื้อขาย

Date: ____________________

Party SELLING (Seller): Name ______________ ID No. ______________
Address ______________________________________________
Phone ______________

Party BUYING (Buyer): Name ______________ ID No. ______________
Address ______________________________________________
Phone ______________

1. GOODS SOLD: [Brand, model, year, color, serial/chassis/
   engine number, plate number, quantity — be exhaustive]
2. TOTAL PRICE: Baht ____________ (in words: ____________)
3. PAYMENT: ☐ Full payment on signing  ☐ Installments:
   Deposit Baht ________ paid today.
   Balance Baht ________ due by ____________ via ____________.
4. DEPOSIT TERMS: Per Section 381 of the Civil and Commercial
   Code — if the Buyer cancels, the Seller keeps the deposit;
   if the Seller cancels, the Seller returns twice the deposit.
   The deposit [is / is not] credited toward the total price.
5. DELIVERY: On ____________ at ____________. Transport cost
   borne by ________. Risk passes to Buyer on delivery.
6. CONDITION & WARRANTY: ☐ Sold as-is, inspected and accepted
   by Buyer  ☐ Warranty: ____________ for ______ days/months,
   remedy: ____________. Known defects disclosed: ____________.
7. DEFAULT: If Buyer fails to pay the balance within ___ days
   of the due date, Seller may terminate and keep the deposit.
8. DISPUTES: Governed by Thai law. Jurisdiction:
   ☐ Court of the Seller's domicile  ☐ Court where goods located.
9. DOCUMENTS: Seller confirms ownership and provides:
   ☐ ID copy  ☐ Vehicle registration book (เล่มทะเบียน)
   ☐ Purchase invoice  ☐ Other: ____________

Seller signature/thumbprint ____________ Date ________
Buyer signature/thumbprint ____________ Date ________
Witness 1 ____________  Witness 2 ____________

Selling a Vehicle: Extra Steps That Matter

The private sales agreement is necessary but not sufficient for vehicles. Ownership follows the registration book, not the paper:

1. Check for outstanding finance. A vehicle under hire-purchase still belongs to the finance company until cleared. Selling it without settling the loan creates criminal exposure, not just civil.
2. Transfer registration together at DLT. Both parties (or representatives with a signed power of attorney) attend the transport office with: the blue registration book, both ID cards, proof of transferred insurance (พ.ร.บ.), and the sale agreement. Until the book shows the new owner, tickets, tolls, and tax penalties land on the old one.
3. Handle insurance separately. Compulsory พ.ร.บ. coverage can be transferred or repurchased; voluntary comprehensive insurance usually needs a new policy.
4. Keep copies of everything, including a dated photo of the odometer at handover.

Common Mistakes That Void Your Protection

• Using the classified-ad deposit slip as the whole contract. A deposit receipt proves money moved, not what was agreed.
• Leaving the balance date blank "because we trust each other." The date is the trigger for every default clause above.
• Letting the buyer take the vehicle "to do the transfer himself." Weeks later the transfer hasn't happened and the fines are still yours. Go together, or notarize/execute a proper power of attorney.
• As-is clause hiding known defects. Disclosure in writing is cheap; concealment claims are expensive.
• Signing without ID verification. Check the ID card photo against the person in front of you and attach a copy.

Creating and Signing the Agreement Online

You don't need a lawyer for a standard sale — you need the blanks filled correctly and signatures captured properly. With AiDocX you can generate the agreement from a prompt (describe the goods, price, and payment split), review the draft, and send it to the other party for electronic signature. Electronic transactions are valid under Thailand's Electronic Transactions Act B.E. 2544 for agreements like this, and a signed digital copy stored in the cloud survives the coffee stain that kills paper receipts.

For recurring sales — equipment dealers, wholesale stock — save your filled template as the master and reuse it, changing only the schedule of goods each time.

FAQ

Does the agreement need to be in Thai? For use with Thai authorities (DLT, land offices, courts), yes — Thai or bilingual with matching content. Bilingual versions are safest between a foreign buyer and Thai seller, provided both parties understand what they sign.

Is a handwritten agreement valid? Yes. Form doesn't matter; signed agreement on the terms does. Handwritten is fine until someone disputes what a word means — typed text with numerals-and-words amounts avoids that class of dispute.

Can I just use the receipt from the shop? Receipts prove payment. They don't state warranty terms, deposit consequences, delivery obligations, or default remedies — the four things disputes are actually about.

What if the buyer stops answering after paying the deposit? If the buyer refuses to complete, Section 381 lets you keep the deposit and resell. Document the cancellation in writing (a message demanding completion within a deadline, sent through a channel that keeps records) before reselling.

How much should the deposit be? Whatever both sides accept — commonly 10% for vehicles and stock. Remember the double-refund rule cuts the other way too: if you cancel as seller, you owe twice what you collected.

---

A solid agreement takes ten minutes to make and saves months of arguing. Generate a sales agreement draft, adjust the details, and collect signatures online with AiDocX — plans start at $6/month.